Panasonic SA-VK81DGCS Service Manual page 90

SA-VK81DGCS / SA-VK81DGCP
SCHEMATIC DIAGRAM - 11
MAIN CIRCUIT
+7.5V
14
LOAD_GND
13
CHANGE_SW
12
GND
11
UP/DOWN_F
10
TO
UP/DOWN_R
CD LOADING
9
BOTTOM
CIRCUIT
8
POSITION
(CN1) ON
7
SCHEMATIC +5V
6
DIAGRAM - 29
OPEN_SW
5
OP/CL_FWD
4
OP/CL_REV
3
ST_SW
2
PLAY_SW
1
CN2810
: +B SIGNAL LINE
CD8V
R2978 0 CHANGE_SW
KA_ROUT
KA_LOUT
R2979 0 UP/DOWN_F
KA_RIN
R2980 0 UP/DOWN_R
KA_LIN
R2981 0 BOTTOM_SW
POSITION
R2982 0
MIC
VREF+
R2843 220
R2983 0 OPEN_SW
R2984 0 OP/CL_FWD
R2985 0 OP/CL_REV
R2986 0 ST_SW
R2987 0 PLAY_SW
C2900
4700P
R2939
C2905
5.6K
1000P
R2941
C2937
10K
3300P
R2943
10K
C2917
C2918
C2919
R2944
R2969
68
+15V
: MIC SIGNAL LINE
: MAIN SIGNAL LINE
C2218 16V10
C2120 16V10
L2821
G0C100JA0030
80 79
1
2
3
4
C2899
5
50V2.2
6
7
R2935 15K
C2901 8
R2938 3.9K
560P
9
10
C2904 1000P
R2940
27K
11
C2902 1000P
12
C2936 50V2.2
13
R2942
4.7K
14
C2907 15
C2912
820P
0.047
16
0.068
17
0.068
18
0.068
19
C2920 20
0.047
15K
21
C2921 16V47
22
23
C2922 C2923
24
16V100 0.1
R2945
0
25 26 27 28 29 30 31 32 33
R2952
68
D5858
B0BC5R000009
90
78 77 76 75 74 73 72 71 70 69 68 67 66 65
IC2813
C1BB00000801
KARAOKE IC
34 35 36 37 38 39 40
R2946
C2925
12K
1000P
R2947
10
R2955
220
R2991
0
C2121
50V1
64
63
C2219
62
50V1
61
60
59
58
57
R2948
0
56
55
C2935 C2934
54 0.1 16V100
53
52
C2933
50V1 C2932
51
4700P
50
49
C2931
1000P
48
47
C2930
0.068 C2929
46
0.1
45
44
C2928
43
C2927 0.1
0.068
42
41
C2926
4700P